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Originally Posted by Sig 210
US military 5.56mm brass does not have less capacity and it is not heavier. I have weighed .223 and 5.56mm cases for years. The heaviest cases made are Lapua match. Some Brit 5.56mm cases are very heavy.
Go to the link: Click on Tech and then click on brass weights.
AR15BARRELS.COM - Technical Documents |
Right, and Randall only weighed a few cases and came up with a theory. We load about 30,000 rounds a week of .223 using fired military brass and commercial brass. The commercial brass is lighter and holds more than the military brass. This is consistent across the little over 3 million rounds of .223 my company has loaded over the last two years.
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Not so. For about 25 years Ruger has said that their rifles rifles will accept either 5.56mm or .223 ammo.
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Newsflash: you can chamber a 5.56 NATO round in a .223 SAAMI chamber. That's nothing new and proves nothing.